
Extend baremetal json client with portgroups. Add basic positive tests for portgroups baremetal api resources: test_create_portgroup_with_address, test_create_portgroup_no_address, test_delete_portgroup, test_show_portgroup, test_list_portgroups. Closes-Bug: #1666858 Change-Id: Ifb17a43fa61d0ffb22b7af25174206cf798ca0ee